16766427625 has 8 divisors (see below), whose sum is σ = 20924501832. Its totient is φ = 13413142000.

The previous prime is 16766427581. The next prime is 16766427637. The reversal of 16766427625 is 52672466761.

It can be written as a sum of positive squares in 4 ways, for example, as 1234538496 + 15531889129 = 35136^2 + 124627^2 .

It is a de Polignac number, because none of the positive numbers 2^k-16766427625 is a prime.

It is a super-2 number, since 2×16766427625² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67065586 + ... + 67065835.

It is an arithmetic number, because the mean of its divisors is an integer number (2615562729).

Almost surely, 2^16766427625 is an apocalyptic number.

It is an amenable number.

16766427625 is a deficient number, since it is larger than the sum of its proper divisors (4158074207).

16766427625 is an equidigital number, since it uses as much as digits as its factorization.

16766427625 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134131436 (or 134131426 counting only the distinct ones).

The product of its digits is 5080320, while the sum is 52.

The spelling of 16766427625 in words is "sixteen billion, seven hundred sixty-six million, four hundred twenty-seven thousand, six hundred twenty-five".